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| author |   Alexey Kardashevskiy <aik@ozlabs.ru> | 2022-06-01 14:01:17 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-06-29 19:41:00 +1000 |
| commit | a28a2eff1e0ff684f51b3dc6371ff5b651a063d4 (patch) | |
| tree | 1201546ed769aa874ddfc42d3ed046ee3a4359e2 /arch/powerpc/platforms | |
| parent | powerpc/bpf/32: Add instructions for atomic_[cmp]xchg (diff) | |
| download | linux-dev-a28a2eff1e0ff684f51b3dc6371ff5b651a063d4.tar.xz linux-dev-a28a2eff1e0ff684f51b3dc6371ff5b651a063d4.zip | |
powerpc/pseries/iommu: Print ibm,query-pe-dma-windows parameters
PowerVM has a stricter policy about allocating TCEs for LPARs and
often there is not enough TCEs for 1:1 mapping, this adds the supported
numbers into dev_info() to help analyzing bugreports.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220601040117.1467710-1-aik@ozlabs.ru
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/pseries/iommu.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index fba64304e859..2fb10ef6dee8 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -1021,9 +1021,6 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail, ret = rtas_call(ddw_avail[DDW_QUERY_PE_DMA_WIN], 3, out_sz, query_out, cfg_addr, BUID_HI(buid), BUID_LO(buid)); - dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x returned %d\n", - ddw_avail[DDW_QUERY_PE_DMA_WIN], cfg_addr, BUID_HI(buid), - BUID_LO(buid), ret); switch (out_sz) { case 5: @@ -1041,6 +1038,11 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail, break; } + dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x returned %d, lb=%llx ps=%x wn=%d\n", + ddw_avail[DDW_QUERY_PE_DMA_WIN], cfg_addr, BUID_HI(buid), + BUID_LO(buid), ret, query->largest_available_block, + query->page_size, query->windows_available); + return ret; } |